Create a Lot of Zettels and Keep Them Forever to Be Surprised
Fleeting- see
create a lot of zettels and keep them forever to be surprised
In Communicating with Slip Boxes by Niklas Luhmann, it is said that the system must surprise you.
I guess that you need to keep a big zettelkasten forever so that when you work on a new project, you can be surprised to find meaningful insights in old seemingly unrelated projects.